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Heron Therapeutics Reports Positive Top-Line Results from Phase 2 Studies of HTX-011 for Management of Post-Operative Pain

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Heron Therapeutics, Inc. (NASDAQ:HRTX), a biotechnology company focused on improving the lives of patients by developing best-in-class medicines that address major unmet medical needs, announced preliminary, positive, top-line efficacy results from two Phase 2 clinical studies of HTX-011, its lead product candidate for the management of post-operative pain in patients undergoing bunionectomy (Study 208) and inguinal hernia repair (Study 202) and safety data from our ongoing Phase 2 program. HTX-011, which utilizes Heron’s proprietary Biochronomer® drug delivery technology, is the first long-acting formulation of the local anesthetic bupivacaine in a fixed-dose combination with the anti-inflammatory meloxicam and is designed to target both post-operative pain and its associated inflammation.

“With today’s results in hand, we could not be more excited about the potential of HTX-011 to represent a best-in-class therapeutic for post-operative pain”

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Study 208 – Bunionectomy

Study 208 was a randomized, placebo- and active-controlled, double-blind Phase 2 clinical study in patients undergoing bunionectomy. This study evaluated the efficacy and safety of two formulations of HTX-011 at 200 mg compared to the standard dose of bupivacaine solution and placebo. Bupivacaine solution is the standard-of-care agent for the management of post-operative pain. In addition, HTX-011 was evaluated when administered via Mayo Block (nerve block via closed wound injection) or infiltration (open wound injection).

The primary endpoint was the difference as compared to placebo in pain intensity as measured by the Summed Pain Intensity (SPI) score in the first 24 hours post-surgery (SPI 0-24). Key secondary endpoints included comparison to bupivacaine solution, the time to first use of opioid rescue medication, total opioid consumption and difference in pain intensity compared to placebo or bupivacaine solution when administered as a Mayo Block or infiltration. The major findings for our Phase 3 formulation of HTX-011 are as follows:

  • There was a 66% reduction in pain as measured by SPI 0-24 when comparing HTX-011 administered by infiltration to placebo (p<0.0001). There was a 64% reduction in pain as measured by SPI 0-24 when comparing HTX-011 administered by infiltration to bupivacaine solution (p<0.0001).
  • There was a 69% reduction in pain as measured by SPI 0-24 when comparing HTX-011 administered by nerve block to placebo (p<0.0001). There was a 71% reduction in pain as measured by SPI 0-24 when comparing HTX-011 administered by nerve block to bupivacaine solution (p<0.0001).
  • Significant reductions in pain were maintained through 96 hours post-surgery (SPI 0-96) for all groups: HTX-011 by infiltration versus placebo (p=0.005), HTX-011 by infiltration versus bupivacaine solution (p=0.019), HTX-011 by nerve...

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